Sending mails long delay


  • Used Zammad version: 5.1.0-1647874663.58f3cd67.focal
  • Used Zammad installation type: package
  • Operating system: Ubuntu 9.4.0-1ubuntu1~20.04
  • Browser + version: Chrome v100

Sending mails from zammad-web with my pre-configured mail account takes forever to actual send. In my attempts I tried to send about 20-30 mails to various users using zammad.
The delay itself was always from 5 to 15 minutes. Receiving mails was not a problem at all. Sending mails from the mail account without zammad worked without a problem too.

So zammad must be struggling with something?

Expected behavior:

  • Sending mails without big delay

Actual behavior:

  • Sending mails takes forever to send them to their recipient.
  • Took about 5-15 minutes to send

Steps to reproduce the behavior:

  • Answering on any support ticket in zammad-web using the UI.

5-15 minutes for an email actually is absolutely fine on technical site. A email can be on it’s way for several days actually if things go terribly wrong.

Any way. You may want to check if the mail is being grey listed from the receiving end (thus is Zammad takes 15 minutes to provide the mail to the mail server or not). Email sendout is running as delayed jobs and thus not handled immediatly. This allows us not to wait for sendout and provide much faster UI.

Check if your delayed jobs are stacking.

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